Hi everybody!
I'd like to be enlightened about something.
I'd like to control the universal motor (230ac,16A) of a drill to replace the peak of the intensity (due to the time taken by the rotor to rotated and to provide the counter EFM) by a ramp but I don't how to begin.Maybe with a microcontroller or totally analogically.
I want to realize a "soft start" for a drill that's to say avoid this peak (which occurs at every start) and regulate the intensity until the start of the drill. That's what i meant by ramp (directly from 0A to the normal speed).
Thank you
I don't how to use theses capacitors but that's a good start.
For the thyristor controller, i'm not sure to completely understand but it looks like it fits with what i want.
Which form of these circuits (bridges, triac-diac) will drop the voltage just for the start time?
And how could I close automatically the contactor when all this circuit will be in a drill?
Here I found a soft starter circuit with triac.
Soft start time is adjusted via simple RC-circuit. 0....5sec.
And used triac current must be minimum 25A ( 35A is Ok)
Or change the circuit for 2 thyristors.